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Finding the Fourth Proportional to 100,602,316.80, 150,903,475.20 and 86,253,409.80

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Solution

The fourth proportional to 100,602,316.80, 150,903,475.20 and 86,253,409.80 is: 129,380,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,602,316.80 : 150,903,475.20 = 86,253,409.80 : x
  2. Step 2: Convert to fraction form
    100,602,316.80/150,903,475.20 = 86,253,409.80/x
  3. Step 3: Cross multiply
    100,602,316.80x = 150,903,475.20 × 86,253,409.80
  4. Step 4: Simplify right side
    100,602,316.80x = 13,015,939,286,669,736
  5. Step 5: Solve for x
    x = 13,015,939,286,669,736/100,602,316.80
  6. Step 6: Final answer
    x = 129,380,114.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.